<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        .ts{
            width: 200px;
            height: 200px;
            background-color: blue;
        }
        .ts > div{
            width: 100px;
            height: 100px;
            color: yellow;
        }
        .ts span{
            color: red;
        }
        .ls ~ h1{
            color: blue;
        }
    </style>
</head>
<body>
    <h1>标题标签</h1>
    <p>段落标签</p>
    <img src="https://www.sportspress.cn/webimages/2103/1-210306162J50-L.jpg" alt="杜兰特"
    width="1000px"
    height="500px">
    <div>啦啦啦</div><div>啦啦啦</div><div>啦啦啦</div><div>啦啦啦</div>
    
    <a href="./test4.html">跳转到</a>

---
    <div class="ts">我是div
        <div>我是里面的div
            <span>我是里面的里面的span</span>
        </div>
    </div>
    <div class="ls">我是外面的div</div>
    <h1>一级标题<h1>
        <h1>一级标题<h1>
            <h1>一级标题<h1>
    


</body>
</html>